Brush-stapling machine.



M'URDOCK. BRUSH STAPLING MACHINE. APPLIGAT'IQN PILED'AUG; l2, 1907..

Patented Feb. 14, 1911.

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WUTJNESSES:

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lGqs. .MURDOGL BRUSH STAPLING MACHINE. APPLICATION FILED AUG. 2, 1907.

Patented Feb.14,191'1.

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INV'ENTOR WITNESES:

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G'. s. MUR-1100K. BRUSH STAPLING MACHINE.

APPLICATION :FILED AUG. 2, 1907.

Patented Feb. 14, 1911.

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WITNESSES:

. S. MURDOCK.

Patented Feb. 14, 1911 4 SHEETS-SHEET 4.

WITNESSESI 1HE NoRnls PETERS CoA. wAsHmoroN, u c.

GIIFORD S. MURDOCK, OF DETROIT, MICHIGAN.

BRUSH-STAPLING MACHINE.

Specification of Letters Patent.

Patented Feb. 1li, 1911.

Original application filed January 7, 1904, Serial No. 188,023. Dividedand this application filed August 2, 1907. Serial No. 386,722.'

To all whom it may concern:

Be it known that I, GILFORD S. MUBDOCK, a citizen of the United Statesof America, residing at Detroit, in the county of Tayne and State ofMichigan, have invented certain new and useful Improvements in Brush-Stapling Machines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This application is divided out from my United States application forbrush making machine, filed J an. 7, 1904:, Serial No. 188,023.

This invention relates to new and useful improvements in staplingmechanism for brush making machines and has for its object to make amachine which will automatically make and drive the staples into thebrush block.

To this end the invention consists in the means for feeding and' cuttingoff the wire, the mechanism for forming and driving the staple into thebrush block to secure the bunches therein and in` the peculiarconstruction, arrangement and combination of parts all as more fullyhereinafter described and shown in the accompanying drawings, in whichFigure 1, is a side elevation of a brush machine embodying my invention,Fig. 2, is a front elevation thereof, and Fig. 3, is a plan view of thesame, Fig. 4, is a plan view of the vertically movable die block andguides therefor, Fig. 5, is a vertical central section through the dieblock on the line m-w Fig. fl, Fig. G, is a section at right anglesthereto on the line g/-y Fig. 5, Fig. 7 is a perspective view of thefeed mechanism and actuating means therefor, Fig. 8 is a similar viewshowing the mechanism in its forward position ready to release thebunch, Fig. 9, is a vertical central section through the lower portionof the hopper and feed mechanism, Fig. 10 is a perspective view showingthe nger mechanism.

1 is the frame comprising the legs 2 and the top or bed 3 securedthereto in any suitable manner and provided with rearward extensions orbrackets 1 formed with bearings in which the shaft 5 is journaled.

6 is a bracket secured to the frame in the upper end of which is pivotedthe bell crank lever 7 connected with a foot lever 8 atone end by meansof the rod 9 and at its opposite end loosely engaging the hub of themovable member 10, splined on the shaft and formed with a tapering faceadapted to engage the internal taper face of the loose pulley 11 to forma friction clutch, a spring 12 being provided to normally hold saidlever elevated to release the clutch.

13 is a bracket secured tothe bed of the machine near its forward edgeand provided with vertical ways in which the plunger 14 reciprocates thelatter being connected by means of a link 15 to a lever 16 pivoted atits middle in a double bracket 17 and with its rearwardly extendingforked end riding on a cam 18 on the shaft 5 to move the plungerdownward. An anti-friction roll 19 is journaled between the forked endsof said lever and a second roll 2O is also carried by said levercoperating with an internal cam 21 formed integral with the cam 18 toreturn the plunger.

22 is a vertically movable die block traveling in the guide pieces 23and 241 secured to the machine bed directly below the plunger 14, thebracket 13 being cut away at this point.

25 is a lever fitting in a socket formed in the back of the die blockand pivotally mounted between the two forwardly extending ears 26 of thebracket 17 and at its rear end carrying an anti-friction roll 27coperating with an internal cam 28 on the shaft 5 for reciprocating thedie block in timed relation to the plunger.

29 is the die proper made in two like halves preferably semi-circular incross-section to form a rectangular passage between them for the hammer30 carried by the plunger 14e each half of the die being longitudinallyscored at 31 to receive the ribs 32 on the hammer and also form a spaceto hold the wire staple before being driven, the die having a transversecut 33 at its lower end to receive a finger 34 over which the staplesare formed, said finger is journaled on a shaft 35 carrying a rock arm36 connected by a link 37 with the rod 38 guided in a casing 39 andcarrying at its rear end an antifriction roller coperating with aninternal cam 40 to reciprocatethe parts.

41 is a rod filed away at one side for a portion of its length to form aknife for cutting off the wire, the round face of said rod forming a keyfor the die.

42, 4:3 are set screws for holding the halves of the die in place and 44is an angular block interposed between the kniferand set screw 43 tohold the knife at the proper angle.

Extending laterally from the guide piece 24 and integrally formed withthe base thereof is the rib45 and 46 is an L shaped bracket secured tothe block 47 by machine screws which in turn secure the block to -thebed.

48 is a rectangular bar fitting between the ribs 45 and 46 and clampedagainst Athe rib 45 by means of the set screws 49 said bar being cutoftn at an angle to correspond with that of the knife 41 and providedwith a central'longitudinal aperture for the wire. By placing one ormore shims 50 between the ribs and bar the point at which the wire willbe cut o can be varied within certain limits to make different sizedstaples.

The mechanism for feeding the wire comprises a reciprocating plate 51secured in place upon the bed by the guides 52 and carrying a roll 53and cam lever 54 pivoted eccentric thereto between which the wire isfed, a spring 55 holding the cam against the roll.

56 and 57 are levers pivotally connected together at their adjacentoverlapping ends and pivotally mounted upon the bed at their middle, thefree end of the lever 5G being connected to the plate 51 and thc freeend of the lever 57 coperating with a cam 58 to reciprocate the plate 5lto feed the wire, a second roll 59 and cam lever 60 similar to the roll53 and lever 54 being arranged upon a. stationary part of the feed tableso that these willl grip the wire while the plate 51 carrying the dogs53, 54 moves back to take a new hold on the wire the dogs 59, 60 beingreleased as the plate 51 moves forward Vto feed the wire.

61 is a slide made in two parts G2 and G3 guided upon the bed betweenthe guides G4 and connected together free to have a limited movement inrelation to each other by the screws 65 traveling in the slots 66, thepart 62 being formed with a longitudinal rib 67 and connected at itsrear end with the cam G8 on the shaft 5 through the medium of the levers69 pivotally connected together at their adjacent overlapping ends andpivoted upon the bed at their middle, the part 63 of said slide beinggrooved at its forward end for the passage of the staple and at the sametime forming' a guide for the rib 32 on the hammer when in its forwardposition at which time with the slides 61 on one side and the block 47on the other a closed pocket will be formed for the brush material sothat when the finger 34` is retracted and the hammer descends anunobstructed passage will be presented to double up and force the bunchthrough the openended spout 70 and drive the same into the socket in thewooden brush block and secure in place therein with a staple. The spout70 is preferably provided with two pivoted spring backed lingers 71 torestrict the passage in starting so as to double up the bunches short ingoing through thus insuring more evenness in the material.

72 is a feed hopper above the slide 6l provided with a slitted bottomopen at its front edge and composed of two springs 89 between which thefinger 73 pivoted on the part 63 of the slide reciprocates.

74 is a trigger pivoted in the forward end of the finger and normallyheld in its closed position by a spring 75.

76 is an under cut slot in the block 47 cooperating with the curved endof the finger 7 and 77 is a flat leaf spring forming a stop to engagethe lower end of the trigger and trip the same to release the bunch whenin its forward position as shown in Fig. 8 suitable guides being formedin the front edge of the block 47 for the hammer 30.

78 is a rib on the feed table on which the finger 73 reciprocates tohold it in its elevated position as shown in Fig. 9, the un derside ofsaid linger being cut away at an angle so that as it clears the inclinedend of said rib it will permit the finger to drop with the bunch infront of the slide 6l.

79 is a cam on the shaft- 5 acting through c the medium of the levers 80to finally move the part 63 of the slide forward the length of the slots66 after the part 62 has reached its extreme forward movement in orderto bring the bunch in front of the slide and dic rectly over thedischarge opening.

81 is a forwardly project-ing finger integrally formed with the part 63and with the finger 73 adapted to support the bunch on each side of itsmiddle so that as the hammer 30 strikes the bunch between said fingers73 and 8l it willwith the aid of the fingers 7l double up the bunch andforce it through the spout into thesocket in the brush block. 82 is thework supporting table having a screw-threaded shank verticallyadjustably secured in the arm 83 by the nuts 84 the table beingadjustable to any angle by means of the slotted link 85 and clampingbolt 86.

Having thus fully described the invention it is intended to operate asfollows: Motion being imparted to the shaft 5 and through the medium ofthe cam 58, levers 56, 57 and plate 51 the wire is fed under the dieblock. As soon as the block descends through the medium of the lever 25and cam 28, the wire a staple. At the same time the slide 61 havingmoved backward across the slotted bottom of the feedhopper and the mouthof the finger 73 filled withV the corn or other 125 fibrous materialcommences its forward movement through the medium of the camV 68 andlevers 69 connected to the part 62 of the slide which moves forwardfirst from c the position shown in dotted lines Fig. 7 V130 lio is outoff and formed over the finger 34 into until it abuts against thematerial in the mouth of the finger' 73 as shown in full lines whichforms a stop and thus carries the part G3 with it and t-he whole slide61 moves forward to the position shown in full lines Fig. 7. At thistime the lever 8O strikes the projecting end 87 of the part 63 and movesit forward as shown in F ig. 8, so that the shoulder S8 on the undersideof the finger 73 clears the end of the rib 78 and permits the finger 7 3with the bunch to drop in front of the slide (Sl when the stop 77 willstrike the lower end of the trigger 7 el and release the bunch. At thistime the hammer 30 and die block 22 descend through the medium of thelevers 16 and 25 and cut off', form and drive the staple over the bunchand into the brush block supported on the support 82, the bunch beingdoubled up in passing through the spout 70 by the spring fingers 7l.

lVhat I claim as my invention is l. A staple forming and drivingmechanism comprising in combination a hammer, a die block sleeved on thehammer, means for moving the die block and hammer one in advance of'theother, a finger adapted to project beneath the hammer, means forreciprocating said finger, a two part die in the die block having a cutout portion adapted to straddle the finger', a cutter having a shankportion forming a key for said die, a set screw for said cutter andmeans for intermittently feeding' the wire to said cutter.

2. A staple forming and driving mechanism comprising in combination areciprocating hammer having ribs, a finger adapted to be projectedbeneath the hammer, a two part die provided with grooves, sleeved on thehammer and having a cut out portion adapted to straddle said finger, atraveling die block carrying said die and a wire cutter having a shankportion forming a key for said die.

3. A staple forming and driving mechanism comprising in combination areciprocating hammer having ribs, a finger adapted to be projectedbeneath the hammer, a two part die provided with grooves, sleeved on thehammer and having a cut out portion adapted to straddle said finger, atraveling die block carrying said die, a wire cutter having a shankportion forming a key for said die and set screws for said die andcutter, means for moving the die block and hammer one in advance of theother and means for intermittently feeding the wire to the cutter.

4l. A staple forming and driving mechanism comprising in combination areciprocating hammer, a die block sleeved on the hammer, a two-part diecarried by the die block, a cutter carried by the die block and forminga key for the die, and set screws whereby the die is held in position inthe block.

A staple forming and driving mechanism comprising in combination areciprocating hammer, a die block sleeved on the hammer, a fingeradapted to project beneath the hammer, a two-part die carried by the dieblock adapted to straddle said finger, a cutter' forming a key for thedie carried by the die block and a wire guide in proximity to thecutter.

6. A fastener inserting mechanism comprising a reciprocating hammer anda staple forming sleeve, a removable die in said sleeve and in contactwith which the hammer moves, and a key for holding said die in place,said key forming a cutter.

In testimony whereof I afiiX my signature in presence of two witnesses.

GILFORD S. MURDOCK.

Vitnesses C. R. STICKNEY, O'r'ro F. BARTHEL.

